December in Atka is the windiest month of the year. In December, the weather in Atka is typically freezing. Average daily high temperature in December is about 24 degrees below zero. On average, Atka has 19 cloudy, 7 snowy, and 5 sunny days in December. The snowfalls are usually light. December as well as January, February, March, and April is considered the most uncomfortable time to visit Atka.